Approaches for improving skin hydration and moisturization
a technology for applied in the field of skin hydration and moisturization improvement, can solve the problems of reducing the ability to retain moisture, affecting the hydration or moisturization of the skin, so as to improve the hydration or moisturization effect, facilitate the improvement, accelerate the effect of improvemen
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example 1
General Procedure for Human Clinical Trials
[0114]This Example describes a general procedure developed for the human clinical studies that were carried out to evaluate the mixtures described herein for their effectiveness in improving skin hydration or moisturization.
[0115]Changes in skin conductance, impedance or capacitance were used to study epidermal hydration in vivo. Measurements were made to determine the difference in dielectric constant of the skin. Typically, skin has a low dielectric constant, and water has a high dielectric constant of 81. When skin is hydrated, conductance and / or capacitance increases and / or impedance decreases. A Corneometer® CM 825 (Courage+Khazaka Electronic, Germany) was used to measure changes in the electrical capacitance of the test subject's skin which is reflective of the changes in hydration or moisturization level of the skin surface. The measurements were based on capacitance measurement of a dielectric medium. The measurement can detect smal...
example 2
Clinical Evaluation of the Efficacy of Test Product 1 Mixture Containing 1% PEG-16 Macadamia Glycerides and Water
[0120]Clinical studies were conducted according to the general procedure described in Example 1 herein above. Under conditions of the study, a total of 15 healthy female subjects, 35-65 years of age, completed the clinical study evaluating the efficacy of a mixture containing 1% PEG-16 Macadamia Glycerides oil and deionized water (or “DI Water”). A summary of key clinical findings is shown in Table 1.
TABLE 1Average post-treatment differences in skin hydration or moisturization relative to the averagebaseline value - Positive differences indicate increases in skin hydration / moisturization.15301238ParameterMinuteMinuteHourHourHourHourMean % Difference from Baseline1.08%−0.05%−0.64%0.19%−0.58%−0.27%(Placebo Control Site)% of Subjects Improved66.67%60.00%40.00%46.67%20.00%40.00%(Placebo Control Site)Mean % Difference from Baseline102.44%76.41%54.61%37.56%28.04%23.72%(Positive...
example 3
Clinical Evaluation of the Efficacy of Test Product 2 Mixture Containing 2% PEG-16 Macadamia Glycerides and Water
[0127]Clinical studies were conducted according to the general procedure described in Example 1 herein above. Under conditions of the study, a total of 15 healthy female subjects, 35-65 years of age, completed the clinical study evaluating the efficacy of a mixture containing 2% PEG-16 Macadamia Glycerides oil and DI Water. A summary of key clinical findings is shown in Table 3.
TABLE 3Average post-treatment differences in skin hydration or moisturization relative to the averagebaseline value - Positive differences indicate increases in skin hydration / moisturization.15301238ParameterMinuteMinuteHourHourHourHourMean % Difference from Baseline1.08%−0.05%−0.64%0.19%−0.58%−0.27%(Placebo Control Site)% of Subjects Improved66.67%60.00%40.00%46.67%20.00%40.00%(Placebo Control Site)Mean % Difference from Baseline102.44%76.41%54.61%37.56%28.04%23.72%(Positive Control)% of Subjects ...
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